Hands-free device usage: self-report (after 6 months) to recorded
| Self-report | Recorded (% of total call time) | |
|---|---|---|
| N (%)* | Mean % (SD) | |
| Headset (wired) | ||
| No | 53 (94.6) | 0.2 (1.0) |
| Yes, low frequency | 2 (3.6) | 38.5 (11.3) |
| Yes, high frequency | 1 (1.8) | 77.0 (–) |
| Speaker mode | ||
| No | 37 (66.1) | 3.7 (7.0) |
| Yes, low frequency | 17 (30.4) | 7.1 (9.1) |
| Yes, high frequency | 2 (3.6) | 10.6 (12.9) |
| Bluetooth (headset, car kit) | ||
| No | 45 (80.4) | 0.6 (3.7) |
| Yes, low frequency | 8 (14.3) | 4.8 (13.0) |
| Yes, high frequency | 3 (5.4) | 28.4 (25.9) |
*Only phone models included that accurately performed in the laterality tests.